421355055 has 32 divisors (see below), whose sum is σ = 767439360. Its totient is φ = 195409280.

The previous prime is 421355041. The next prime is 421355059. The reversal of 421355055 is 550553124.

It is a happy number.

It is not a de Polignac number, because 421355055 - 2⁵ = 421355023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421355059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51720 + ... + 59309.

It is an arithmetic number, because the mean of its divisors is an integer number (23982480).

Almost surely, 2^421355055 is an apocalyptic number.

421355055 is a deficient number, since it is larger than the sum of its proper divisors (346084305).

421355055 is a wasteful number, since it uses less digits than its factorization.

421355055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111071.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 421355055 is about 20526.9348661704. The cubic root of 421355055 is about 749.6917577774.

The spelling of 421355055 in words is "four hundred twenty-one million, three hundred fifty-five thousand, fifty-five".